a sad si fin a
a sad si fin a ?
ä WORD_BOUNDARY s̪̻ ä d̪̻ WORD_BOUNDARY s̪̻ i WORD_BOUNDARY f i n WORD_BOUNDARY ä WORD_BOUNDARY
a WORD_BOUNDARY s a d WORD_BOUNDARY s i WORD_BOUNDARY f i n WORD_BOUNDARY a WORD_BOUNDARY ? WORD_BOUNDARY